I follow Mayim at Grok Nation, and it’s a site well worth visiting and reading often. This is how one of the many sites reported her response and Mayim is expected to write about the experience soon: –

Geek culture is celebrated big time on The Big Bang Theory. Geek culture icons who have appeared on the highly popular CBS sitcom include the likes of Adam West, Leonard Nimoy, Bill Gates, Elon Musk, and Stephen Hawking. Star Wars legend Mark Hamill, however, is probably the only guest star who made actress Mayim Bialik peed in her pants. Yes, you read that right.

Earlier this week, CBS announced that the actor famously known for his iconic role as Luke Skywalker in the Star Wars films will guest star in the last episode of The Big Bang Theory Season 11, due to air on May 10.

The finale will focus on the much-anticipated wedding between Bialik’s character Amy Farrah Fowler and Jim Parson’s Sheldon Cooper. No news as yet on whether Hamill will be appearing as himself – a la his Star Wars compatriots Carrie Fisher and James Earl Jones in a Season 7 episode entitled “The Convention Conundrum” in 2014 – or as his Star Wars character, considering Sheldon is a huge fan of the sci-fi franchise created by George Lucas.

As if revealing to the world that she “peed in her pants” and has “5 chins” weren’t rib-tickling enough, Bialik proceeded to upload a video of herself sitting in her car, totally geeking out like a fangirl on how overwhelmed she was upon meeting the great Mark Hamill.